KR970011721B1 - Compression and system of pcm data - Google Patents

Compression and system of pcm data Download PDF

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Publication number
KR970011721B1
KR970011721B1 KR94026224A KR19940026224A KR970011721B1 KR 970011721 B1 KR970011721 B1 KR 970011721B1 KR 94026224 A KR94026224 A KR 94026224A KR 19940026224 A KR19940026224 A KR 19940026224A KR 970011721 B1 KR970011721 B1 KR 970011721B1
Authority
KR
South Korea
Prior art keywords
tone
data
address
reproducing
receives
Prior art date
Application number
KR94026224A
Other languages
Korean (ko)
Other versions
KR960016154A (en
Inventor
Sang-Yong Kim
Original Assignee
Lg Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lg Electronics Inc filed Critical Lg Electronics Inc
Priority to KR94026224A priority Critical patent/KR970011721B1/en
Publication of KR960016154A publication Critical patent/KR960016154A/en
Application granted granted Critical
Publication of KR970011721B1 publication Critical patent/KR970011721B1/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3053—Block-companding PCM systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3059—Digital compression and data reduction techniques where the original information is represented by a subset or similar information, e.g. lossy compression

Abstract

The system is for compressing and extending PCM data. The system includes: an upper tone data memory(101) for storing an upper bit of sampled data; a lower tone data memory(102) for storing a lower bit of the sampled data; an address generating part(100) for generating a corresponding upper and lower address to transfer a desired data to the upper and lower tone data memories(101, 102); an upper tone reproducing part(103) which receives a repeat code and a data increasing/decreasing code generated by the upper address, and reproduces an original upper tone according to a reproducing parameter; a ower tone reproducing part 109 which receives a lower tone code generated by the lower address, and reproduces an original lower tone according to a reproducing parameter; a digital signal processor(105) which receives a signal from the upper and lower tone reproducing part(103, 104) and calculates the signal to an original sound.
KR94026224A 1994-10-13 1994-10-13 Compression and system of pcm data KR970011721B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR94026224A KR970011721B1 (en) 1994-10-13 1994-10-13 Compression and system of pcm data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR94026224A KR970011721B1 (en) 1994-10-13 1994-10-13 Compression and system of pcm data

Publications (2)

Publication Number Publication Date
KR960016154A KR960016154A (en) 1996-05-22
KR970011721B1 true KR970011721B1 (en) 1997-07-14

Family

ID=19395043

Family Applications (1)

Application Number Title Priority Date Filing Date
KR94026224A KR970011721B1 (en) 1994-10-13 1994-10-13 Compression and system of pcm data

Country Status (1)

Country Link
KR (1) KR970011721B1 (en)

Also Published As

Publication number Publication date
KR960016154A (en) 1996-05-22

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